Non-Transient Non-Community · PWSID AZ0420423

University of Arizona

Serves 50,000 peopleGroundwaterOwner: StateTucson, ArizonaServes a school or daycare
Nothing open right now.

On record since 2009: 56 violations. 55 missed or late tests · 1 notice or report. Most recent began 2021-10-01.

None of them is a measurement of contaminated water.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

0Over the limit
0Treatment lapse
55Missed or late test
1Notice or report

More violations on record than 89% of active water systems in Arizona. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

20052009 · Missed or late test: 120102013 · Missed or late test: 362013 · Missed or late test: 362013 · Missed or late test: 362013 · Missed or late test: 362013 · Missed or late test: 362013 · Missed or late test: 362013 · Missed or late test: 362013 · Missed or late test: 362013 · Missed or late test: 362013 · Missed or late test: 362013 · Missed or late test: 362013 · Missed or late test: 362014 · Missed or late test: 12015 · Missed or late test: 120152016 · Missed or late test: 52016 · Missed or late test: 52017 · Missed or late test: 12018 · Missed or late test: 42018 · Missed or late test: 42019 · Missed or late test: 12019 · Notice or report: 12020 · Missed or late test: 320202021 · Missed or late test: 22025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
98% missed or late test · 552% notice or report · 1

Across Arizona, 65% of violations are missed or late tests and 5% are water over a limit.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Lead, 90th percentile 4 results on file · action level 15 ppb

1.1 ppb
0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2021-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  2. 2021-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  3. 2020-11-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  4. 2020-11-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  5. 2020-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  6. 2019-10-31E. ColiMonitoring, Source Water (GWR)Back in compliance
  7. 2019-10-11Unknown contaminantOperations ReportBack in compliance
  8. 2018-08-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  9. 2018-08-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  10. 2018-05-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  11. 2018-05-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  12. 2017-01-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  13. 2016-11-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  14. 2016-11-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  15. 2016-10-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  16. 2016-08-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  17. 2016-08-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  18. 2015-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  19. 2014-06-20E. ColiMonitoring, Source Water (GWR)Back in compliance
  20. 2013-01-01ChlordaneMonitoring, RegularBack in compliance
  21. 2013-01-01Ethylene DibromideMonitoring, RegularBack in compliance
  22. 2013-01-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularBack in compliance
  23. 2013-01-01Aroclor 1260Monitoring, RegularBack in compliance
  24. 2013-01-01Aroclor 1254Monitoring, RegularBack in compliance
  25. 2013-01-01Aroclor 1248Monitoring, RegularBack in compliance
Show the other 31 entries
  1. 2013-01-01Aroclor 1242Monitoring, RegularBack in compliance
  2. 2013-01-01Aroclor 1232Monitoring, RegularBack in compliance
  3. 2013-01-01Aroclor 1221Monitoring, RegularBack in compliance
  4. 2013-01-01Aroclor 1016Monitoring, RegularBack in compliance
  5. 2013-01-01PentachlorophenolMonitoring, RegularBack in compliance
  6. 2013-01-01Benzo(a)pyreneMonitoring, RegularBack in compliance
  7. 2013-01-01HexachlorobenzeneMonitoring, RegularBack in compliance
  8. 2013-01-012, 4, 5-TpMonitoring, RegularBack in compliance
  9. 2013-01-012, 4-DMonitoring, RegularBack in compliance
  10. 2013-01-01Heptachlor epoxideMonitoring, RegularBack in compliance
  11. 2013-01-01HeptachlorMonitoring, RegularBack in compliance
  12. 2013-01-012, 3, 7, 8-TcddMonitoring, RegularBack in compliance
  13. 2013-01-01LassoMonitoring, RegularBack in compliance
  14. 2013-01-01AtrazineMonitoring, RegularBack in compliance
  15. 2013-01-01CarbofuranMonitoring, RegularBack in compliance
  16. 2013-01-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
  17. 2013-01-01DinosebMonitoring, RegularBack in compliance
  18. 2013-01-01PicloramMonitoring, RegularBack in compliance
  19. 2013-01-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  20. 2013-01-01SimazineMonitoring, RegularBack in compliance
  21. 2013-01-01OxamylMonitoring, RegularBack in compliance
  22. 2013-01-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
  23. 2013-01-01GlyphosateMonitoring, RegularBack in compliance
  24. 2013-01-01EndothallMonitoring, RegularBack in compliance
  25. 2013-01-01DiquatMonitoring, RegularBack in compliance
  26. 2013-01-01DalaponMonitoring, RegularBack in compliance
  27. 2013-01-01ToxapheneMonitoring, RegularBack in compliance
  28. 2013-01-01MethoxychlorMonitoring, RegularBack in compliance
  29. 2013-01-01Bhc-GammaMonitoring, RegularBack in compliance
  30. 2013-01-01EndrinMonitoring, RegularBack in compliance
  31. 2009-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served50,000
Service connections139
Water sourceGroundwater
System typeNon-Transient Non-Community
OwnerState
StatusActive
CityTucson
EPA ZIP on file85754

Areas served

  • Tucson, Pima County

Reading this record

University of Arizona is a non-transient non-community that draws from groundwater and serves about 50,000 people in Tucson, Arizona. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.